Our hearing may become less acute as a result of prolonged exposure to noises which is unavoidable in the modern world as well as genetic predisposition, diseases of the ear, trauma and some medication.
The changes in hearing are usually gradual, initially difficult to perceive. They first affect soft, high pitched consonants like "s", "f", "th" and "sh" that are crucial to clear understanding of speech. Conversations become strenuous, may result in misunderstanding. Comprehension of speech in the presence of noise that used to be easy may become very difficult or impossible.
Let me help you bring sounds back into your hearing range.